Embedding Magnets in 3D Prints

Introduction

Non-magnetic tweezers:
- Useful for precision work.
- Types: Titanium, Reverse action.
Magnetic polarity indicator:
- Critical for paired magnet sets.
- Types: Electronic and 3-axis mechanical.
Magnetic viewing film:
- Visualizes magnetic field patterns.
Magnet labeling tool:
- Labels poles of project’s magnets.
- Sharpie used for marking.

Observed bed lifting issues with Bamboo X1 Carbon printer.
Dried filament to eliminate excess moisture.
Theory: Magnetic bed repelling embedded magnets.
Tested different magnet sizes and shapes on the bed.
- Noted significant repelling effect.

Magnetic Bed Polarity:
- Magnetic field pattern in a halbach array.
- Reduced repelling effect with thicker/heavier build plates.
- Possible warping/adhesion issues due to repelling field.
Magnet Orientation:
- Reduce repelling by orienting magnets perpendicular to bed’s field pattern.
- Standardize pole orientation for compatibility in projects.

Project Magnet Orientation:
- Rectangular magnets should be perpendicular to bed field.
- Adopt default pole orientation for consistency.
Polarity Identifier Tool:
- Embed frequently used magnets in a plate for quick labeling.
Warping Issues:
- Embed a cradle for a magnet near problematic areas.
- Ensure magnet attracts, not repels, by the bed’s field.
- Additional contact points may help with adhesion.
Heat Retention:
- Be aware magnet may retain heat if bed is heated.
- Add a runner or sprew to physically connect problematic area.

Demagnetizing Print Beds:
- Do not place strong magnets directly on print bed without build plate.
- Incorrect placement can demagnetize bed.

Constructing Remagnetizing Tool:
- Use 15x3 mm ring magnets stacked in alternating polarity.
- Thread onto 100 mm long M4 bolt.
- Roll tool laterally and evenly across bed to remagnetize.
Results:
- Significantly restored magnetic strength.
- Can potentially work better with larger ring magnets.